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Method and apparatus for broadcast primitive filtering in SAS

  • US 8,116,226 B1
  • Filed: 01/30/2006
  • Issued: 02/14/2012
  • Est. Priority Date: 01/28/2005
  • Status: Active Grant
First Claim
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1. A method for broadcast primitive filtering, comprising:

  • defining, based on expander phy, a first virtual domain and a second virtual domain within a serial attached small computer system interface (SAS) domain topology;

    receiving, at a first serial management protocol (SMP) target port of the first virtual domain, a broadcast primitive from a source physical layer device within the first virtual domain; and

    transmitting the broadcast primitive only to a plurality of physical layer devices in the first virtual domain according to a policy associated with the first virtual domain, the broadcast primitive comprising a four character code sequence, the primitive not containing header, address or payload information, the policy defining whether the source device is allowed to access a destination device, wherein the SMP target port determines a routing for the broadcast primitive, based on routing table resources.

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